package com.itheima.controller;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.*;
import	java.text.SimpleDateFormat;
import java.time.Month;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.service.MemberService;
import com.itheima.service.ReportService;
import com.itheima.service.SetmealService;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Calendar;

/**
 * 代码使我快乐 Administrator on 2019/12/11.
 */
@RestController
@RequestMapping("/report")
public class ReportController {

    @Reference
    private MemberService memberService;
    @Reference
    private SetmealService setmealService;
    @Reference
    private ReportService reportService;

    @RequestMapping("/getMemberReport")
    public Result getMemberReport(){
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.MONTH,-12);
        List<String> list = new ArrayList<>();
        for (int i = 0; i < 12; i++) {
            calendar.add(Calendar.MONTH, 1);
            list.add(new SimpleDateFormat("yyyy-MM").format(calendar.getTime()));
        }
        HashMap<String, Object> map = new HashMap<>();
        map.put("months", list);

        List<Integer> memberCount = memberService.findMemberCountByMonth(list);
        map.put("memberCount",memberCount);
        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS,map);
    }

    @RequestMapping("/getSetmealReport" )
    public Result getSetmealReport() {
        List<Map<String, Object>> list = setmealService.findSetmealCount();

        HashMap<String, Object> map = new HashMap<>();
        map.put("setmealCount",list);

        List<String> setmealNames = new ArrayList<>();
        for (Map<String, Object> m : list) {
            String name = (String) m.get("name");
            setmealNames.add(name);
        }
        map.put("setmealNames",setmealNames );
        return new Result(true,MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS,map);
    }

    @RequestMapping("getBusinessReportData" )
    public Result getBusinessReportData(){
        try {
                Map<String, Object> result = reportService.getBusinessReport();
                return new Result(true,MessageConstant.GET_BUSINESS_REPORT_SUCCESS,result);
            } catch (Exception e){
            e.printStackTrace();
            return new Result(true,MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }


    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletRequest request, HttpServletResponse response){
        try{
             //远程调用报表服务获取报表数据
             Map<String, Object> result = reportService.getBusinessReport();
             //取出返回结果数据，准备将报表数据写入到Excel文件中
             String reportDate = (String) result.get("reportDate");
             Integer todayNewMember = (Integer) result.get("todayNewMember");
             Integer totalMember = (Integer) result.get("totalMember");
             Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
             Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
             Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
             Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
             Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
             Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
             Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
             Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
             List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");
             //获得Excel模板文件绝对路径
             String temlateRealPath = request.getSession().getServletContext().getRealPath("template") + File.separator + "report_template.xlsx";
             //读取模板文件创建Excel表格对象
             XSSFWorkbook workbook = new XSSFWorkbook(new FileInputStream(new File(temlateRealPath)));
             XSSFSheet sheet = workbook.getSheetAt(0);
             XSSFRow row = sheet.getRow(2);
             row.getCell(5).setCellValue(reportDate);
             //日期
             row = sheet.getRow(4);
             row.getCell(5).setCellValue(todayNewMember);
             //新增会员数（本日）
             row.getCell(7).setCellValue(totalMember);
             //总会员数
             row = sheet.getRow(5);
             row.getCell(5).setCellValue(thisWeekNewMember);
             //本周新增会员数
             row.getCell(7).setCellValue(thisMonthNewMember);
             //本月新增会员数
             row = sheet.getRow(7);
             row.getCell(5).setCellValue(todayOrderNumber);
             //今日预约数
             row.getCell(7).setCellValue(todayVisitsNumber);
             //今日到诊数
             row = sheet.getRow(8);
             row.getCell(5).setCellValue(thisWeekOrderNumber);
             //本周预约数
             row.getCell(7).setCellValue(thisWeekVisitsNumber);
             //本周到诊数
             row = sheet.getRow(9);
             row.getCell(5).setCellValue(thisMonthOrderNumber);
             //本月预约数
             row.getCell(7).setCellValue(thisMonthVisitsNumber);
             //本月到诊数
             int rowNum = 12;
             for(Map map : hotSetmeal){
                 //热门套餐
                 String name = (String) map.get("name");
                 Long setmeal_count = (Long) map.get("setmeal_count");
                 BigDecimal proportion = (BigDecimal) map.get("proportion");
                 row = sheet.getRow(rowNum ++);
                 row.getCell(4).setCellValue(name);
                 //套餐名称
                 row.getCell(5).setCellValue(setmeal_count);
                 //预约数量
                 row.getCell(6).setCellValue(proportion.doubleValue());
                 //占比
             }
                 //通过输出流进行文件下载
                 ServletOutputStream out = response.getOutputStream();
                response.setContentType("application/vnd.ms‐excel"); // 代表的是Excel文件类型
                response.setHeader("content-Disposition","attachment;filename=report.xlsx"); //指定以附件形式下载
                 workbook.write(out);
                 out.flush();
                 out.close();
                 workbook.close();
                 return null;
            }catch (Exception e){
                return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }
}
